introduction on silvaco and mosfet simulation technique

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06/02/2022 1 An overview on SILVACO TCAD and MOSFET Simulation Process Analysis using SILVACO Presented By: Md.Majharul Islam Showmik Singha Shaon Das Dept. of Electrical and Electronic Engineering Shahjalal University Of Science And SEMICONDUCTOR Research Group ,SUST

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Page 1: Introduction on SILVACO and MOSFET Simulation technique

02/05/2023 1

An overview on SILVACO TCAD and MOSFET Simulation Process Analysis using SILVACO

Presented By:Md.Majharul IslamShowmik Singha

Shaon Das

Dept. of Electrical and Electronic Engineering Shahjalal University Of Science And Technology

SEMICONDUCTOR Research Group ,SUST

Page 2: Introduction on SILVACO and MOSFET Simulation technique

02/05/2023 2

Outline

SEMICONDUCTOR Research Group,SUST

Introduction to TCAD

What Is SILVACO?

How it WORKS?

SILVACO Analogy

About SILVACO MOSFET Simulation

Process Simulation

Device simulation

Characterization and analysis

Our Next Work

Page 3: Introduction on SILVACO and MOSFET Simulation technique

02/05/2023 3

Introduction to TCAD• Technology CAD (Technology Computer Aided Design) is a branch of

electronic design automation that models semiconductor fabrication and semiconductor device operation.

• The modeling of the fabrication is termed Process TCAD [ATHENA In

SILVACO],

• Modeling of the device operation is termed Device TCAD[ATLAS In SILVACO].

SEMICONDUCTOR Research Group,SUST

Page 4: Introduction on SILVACO and MOSFET Simulation technique

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Working Scope on SILVACO

• It has Built in Library for Different Semiconductor materials.•We can characterize those materials in Various

Analysis process.• It has 23 different type of Substrate materials to

research•15 different type of impurity materials

Page 5: Introduction on SILVACO and MOSFET Simulation technique

02/05/2023 SEMICONDUCTOR Research Group,SUST 5

Working Scope on SILVACO cont…List of Different available dopant in SILVACO

Page 6: Introduction on SILVACO and MOSFET Simulation technique

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How SILVACO Works?SILVACO

ATHENA

Input TextCommand Output .STR file

ATLASDeckbuild

Tonyplot

Page 7: Introduction on SILVACO and MOSFET Simulation technique

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SILVACO Analogy

SILVACO is a Virtual Fabrication Lab

ATHENA fabricates a device by different process

ATLAS analyze device characteristics

Page 8: Introduction on SILVACO and MOSFET Simulation technique

02/05/2023 SEMICONDUCTOR Research Group,SUST 8

Defining Substrate Materials :

Page 9: Introduction on SILVACO and MOSFET Simulation technique

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Oxide Layer To p-well Formation:

Page 10: Introduction on SILVACO and MOSFET Simulation technique

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Nitrous diffusion, gate oxide formation and etching:

Page 11: Introduction on SILVACO and MOSFET Simulation technique

02/05/2023 SEMICONDUCTOR Research Group,SUST 11

Sacrificial Cleaning and defining gate oxide width:

Page 12: Introduction on SILVACO and MOSFET Simulation technique

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Polysilicon formation ,Oxidation, Etching & DE-oxidation:

Page 13: Introduction on SILVACO and MOSFET Simulation technique

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Aluminum Formation and Etching :

Page 14: Introduction on SILVACO and MOSFET Simulation technique

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Inside view and mirroring the device to for Final MOSFET:

Page 15: Introduction on SILVACO and MOSFET Simulation technique

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Data extracting and Shaping metal Electrode

Page 16: Introduction on SILVACO and MOSFET Simulation technique

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Defining Drain ,Gate and Source Metal nodeready for data extraction via ATLAS

Source DrainGate

Page 17: Introduction on SILVACO and MOSFET Simulation technique

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Our next work

Extracting data from the device via ATLASCollect more information about Available materials on

SILVACO.Simulate different MOSFET Devices with variation of

different parameter.Design and Analysis (Solar cell, Multi-gate FET,GFET)

Page 18: Introduction on SILVACO and MOSFET Simulation technique